I have tried to install it via the tools menu, and get the same thing.

I don't even need "Playready" (I don't think, all I want is OTA
content). And when I choose to skip it's installation the next screen
about downloading my regional data is stuck at one bar and stays that
way for a long time (more than 15 min.) before I exit.

Is there a way re-install WMC, or get to an .ini file to see what's
up? Or are there better options?